Matthew 13:15

for the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them."

Acts 28:27

for the heart of this people is become gross, their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and be converted and I should heal them."

2 Peter 2:18

when their language swells with vanity, by applying to the sensual passions of the licentious, they allure those who were escap'd for a while, from such deceivers:

Revelation 13:5-6

there was given to him a mouth speaking great things, and blasphemy; and power was given to him for two and forty months.

Treasury of Scripture Knowledge

Summary

They are inclosed in their own fat: with their mouth they speak proudly.

Bible References

They are

Matthew 13:15
for the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them."
Acts 28:27
for the heart of this people is become gross, their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and be converted and I should heal them."

With

2 Peter 2:18
when their language swells with vanity, by applying to the sensual passions of the licentious, they allure those who were escap'd for a while, from such deceivers:
Revelation 13:5
there was given to him a mouth speaking great things, and blasphemy; and power was given to him for two and forty months.